This is an activity I use for Open House at the beginning of the year (or conferences) to get parents to attend. I tell the students the week prior that there will be an estimation jar at the event with prizes (often just tickets or pencils, etc.) but it really helps to increase the turn out!
This can also be used as a math activity during a unit on estimation.
I recommend folding the first page into a "tent" and placing in front of the jar filled with "pom poms" and copying the second page as needed for students to fill out for their guesses.
*Basic edits of this product can be done upon request (ie. taking out the Spanish if not needed, changing the wording if not being used for Open House or family events, etc.)